Lower casing of a ceiling fan



FIG. 1 is a perspective view of a lower casing of a ceiling fan showingmy new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a rignt side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The ornamental design for a lower casing of a ceiling fan, as shown anddescribed.